(Some) 10 oz torpedo & ball weights are hollow

   Why would (at least some)  10 oz torpedo and ball weights be hollow?  For trolling, it makes no sense, but even for jigging, I can't think of why.   The only possibility seems to be that it has to be that way in order to manufacture them. And I only sampled a handful.   
    You might be wondering how I found out.  Or not.

did you actually weigh them to ensure they're 10oz?  i would think it would be kinda cool to put some beads in a hollow weight to make some noise but I don't think that's the reason.

I didn't weigh them - I have only a IKEA spring kitchen scale, but I'll give it a try.  It did occur to me that maybe they want to make them bigger just to distinguish them from 8's or 12's on the shop shelf, maybe 2 oz wouldn't make them mush bigger or smaller - someone could do the math, easier for the balls, I'd guess.  But why would makers go to that effort, and besides, they mold a number into them anyway.

The hollow internal cavity in these lead weights  has been shown to set up a sympathetic resonance with the fish swim bladder which causes the fish to evacuate themselves immediately. They are then very hungry and thus compelled to bite me.

Well, the IKEA $5. scale says the 10 oz's actually weigh 11 oz.  On the ones I know are hollow, same result after subtracting for the foot of clothes-hanger wire.   Which should give you a clue how this all got started.   

... same result after subtracting for the foot of clothes-hanger wire.   Which should give you a clue how this all got started.

Now I'm intrigued...

... same result after subtracting for the foot of clothes-hanger wire.   Which should give you a clue how this all got started.

Now I'm intrigued...

Me too lol.  Did the wire form pull out, reavealing the cavity stuffed with the foot of wire?

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Well, the IKEA $5. scale says the 10 oz's actually weigh 11 oz.  On the ones I know are hollow, same result after subtracting for the foot of clothes-hanger wire.   Which should give you a clue how this all got started.

You were trying to give the weights an abortion? 

-bmb
DICC

Nope, just watched a You Tube vids and said "I could make that."  Coat hanger wire and super glue.  And also that other thing he attached to the end of his line is just stuff I had in my heap and just needed to knot together.  Just didn't have the same results. But I wasn't in the same area he was fishing.  Let me know if this link doesn't work:

For what it's worth. When who ever was pouring the weights,had  contaminated lead. It probably had Zink in it. Or the other thing that could have been the problem. Was a cold mold.or not enough temperature.

For what it's worth. When who ever was pouring the weights,had  contaminated lead. It probably had Zink in it. Or the other thing that could have been the problem. Was a cold mold.or not enough temperature.
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Agreed! I would also drop them on a scale. I'm sure they will not be the correct weight. The molds are made to be filled solid for what ever OZ. you pour. Who ever made those used didnt do it right.

 When I get random pot metals or zinc I haven’t been able to get the temps high enough to melt them, they usually stay in solid form and I gotta scoop em out whole, this has been the case with smelting dove weights, it’s a pain in the ass cause they’re usually 5 or 10 lbs and you’re fishing them out of 20lbs of molten lead.

With a cold mold, the unfilled cavities are usually around or upstream of the sprue or around the edge somewhere.  I normally fill the mold with a couple lead pours (no wire form) just to heat it up, usually the cavity doesn’t fully fill, you just get a half poured casting, not  a casting with a hollow cavity.   

I don’t see how either of the above create a hollow cavity within the casting. They’d be obviously bad just looking at em.  Only way I can see it happening is if someone put a steel capsule in the mold.  This thread still doesn’t make sense. 

I have had this happen to me before. Always with unknown lead.  I can usually make it work by adding tin and turning up the heat. When this happens,this lead gets turned in 40 oz salmon balls.